Home / 13,376.65-18,459.51-7,408.30

Finding the Fourth Proportional to 13,376.65, 18,459.51 and 7,408.30

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Solution

The fourth proportional to 13,376.65, 18,459.51 and 7,408.30 is: 10,223.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.65 : 18,459.51 = 7,408.30 : x
  2. Step 2: Convert to fraction form
    13,376.65/18,459.51 = 7,408.30/x
  3. Step 3: Cross multiply
    13,376.65x = 18,459.51 × 7,408.30
  4. Step 4: Simplify right side
    13,376.65x = 136,753,587.93
  5. Step 5: Solve for x
    x = 136,753,587.93/13,376.65
  6. Step 6: Final answer
    x = 10,223.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.